CVE-2021-46922
High
Description
In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: Fix TPM reservation for seal/unseal The original patch 8c657a0590de ("KEYS: trusted: Reserve TPM for seal and unseal operations") was correct on the mailing list: https://lore.kernel.org/linux-integrity/[email protected]/ But somehow got rebased so that the tpm_try_get_ops() in tpm2_seal_trusted() got lost. This causes an imbalanced put of the TPM ops and causes oopses on TIS based hardware. This fix puts back the lost tpm_try_get_ops()
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedFeb 27, 2024
First seenFeb 27, 2024
How to fix
Update
- linux linux_kernel5.10.33, 5.11.17 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.10.20 ≤ v < 5.10.33, 5.11.3 ≤ v < 5.11.17 | 5.10.33, 5.11.17 |
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